"The Exploratorium Lab is the Exploratorium’s young professionals group dedicated to nurturing peoples’ curiosity about the world around them and building a new audience for the Exploratorium. The Exploratorium Lab offers its members opportunities to experience the excitement and wonders of the Exploratorium from an adult perspective."
Science projects. Haven't been through much of the site but looks interesting for older children. Looking at The Science of Cooking especially. Also, After School Activities looks like something some boys I know might enjoy.
More than 40 years ago, Frank Oppenheimer started a movement that transformed education: He founded the Exploratorium, the prototype for more than 1,000 hands-on, participatory institutions that exist around the world today.